Lexmark C750 User Reference Manual page 45

Symptom
Large jobs do not
collate.
Unexpected page
breaks occur.
Cause
Collate is not set to On.
The job is too complex.
The printer does not have
enough memory.
The job has timed out.
Solution
Set Collation to On in the
through the printer driver.
Reduce the complexity of the print job by eliminating
the number and size of fonts, the number and
complexity of images, and the number of pages in
the job.
Add printer memory or an optional hard disk.
Refer to the Setup Guide for information on
selecting memory options to install.
Set Print Timeout to a higher value from the
Menu.
43
Finishing Menu or
Setup